The Superiority of Efficiency Considering Harmonic Current caused by PWM inverter in Axial-Flux PM Machine Using Ferrite PM for Traction applications: Comparison to Radial-Flux PM Machines Using NdFeB PM

This paper evaluates the harmonic current caused by PWM inverter how it affects efficiency of our proposed novel axial flux permanent magnet machine using ferrite permanent magnet (AF-FePM) for traction applications. The proposed AF-FePM is compared to an off-the-shelf radial flux permanent magnet machine using Nd-sintered magnet (RF-NdPM). For both machines, the efficiency and loss are calculated by finite element analysis (FEA) when applying the sinusoidal and harmonic currents. Finally, this paper presents the superiority of the efficiency considering the harmonic current in the proposed AF-FePM using WLTC driving cycle.